The writer/director having his own huge organic following via the comedy group definitely helped get the funding and get the movie to be more successful than if he was a first time writer/director making a real indie film. This makes it seem like they knew there would be a profit and they should have offered bonuses and extra pay to the crew based on profit.
So if the movie makes x amount over the budget (which means the risk takers got all their money back so their risk is covered) then all the crew get a certain percentage based on their role. Then everyone makes money, including the "risk takers," and the more money the film makes, the better it is for everyone. Even if the distributors got 50% profit after getting their investment back and the other 50 was split between the crew, it would be incredible bonuses for the crew and the distributor would be making an absurd amount of profit.